A knee stabilizer is designed to provide the knee with a degree of lateral stability, although not to the degree provided by a hinged knee brace. They do this by way of plastic or metal stays or springs that run along the sides of the knee. As with hinged knee braces, the idea is to support the knee ligaments and allow them a chance to rest and recover from slight knee sprains or instability.
A knee stabilizer is also a good choice of knee brace for someone who may have a healthy knee but wishes to provide the joint with additional support while participating in a physically strenuous activity. This will help to provide confidence in the knee and reduce the risk of an injury due to the strenuous activity. Athletes in sports that require sharp changes in direction or speed of movement, or that involve a lot of jumping and potentially, awkward landings can especially benefit from this increased support and confidence.